Responses
really not sure if this is exactly what you're looking for but it fits the description
https://myreadingmanga.info/digdug-kurocastle-omegaverse-kimi-ga-nozoma-nai-sekai-daiya-no-ace-dj-eng/
It's a daiya no ace dj called Kimi ga Nozomanai Sekai and u can read it on mrm or nh3ntai
I wanna know too (=・ω・=)
Looking for this one yaoi omegaverse yaoi where the seme mated with the uke and was trying to look for his mark and then he found his mark on the uke's tongue.